Are you sure? Isn't the div the syntax for the 2013 branding stuff
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eirikbApr 3 '14 at 16:09

You would think Design manager would be mentioned somewhere in the post if so, but you might be right ;)
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Robert Lindgren♦Apr 3 '14 at 16:16

Good point. I guess we just have to wait for OP to deliver
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eirikbApr 3 '14 at 20:06

Sorry for the late answer. It didn't work. When I press F12, I see that it creates this at the end of my masterpage code: <div data-name="ContentPlaceHolderMain"><span id="DeltaPlaceHolderMain">..</></> . Maybe it isn't fired? I add head of the custom master page. Can you check it? Thanks.
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e.ozmenApr 4 '14 at 5:31